Construction Management

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    A Study of Alternative Wall Making Materials Selection Using Ahp Method
    (Addis Ababa University, 2022-06-01) Behailu Workneh Tolu; Denamo Addissie (PHD)
    Material selection is a complex and delicate task determined by the vast number of building material options. Likewise, multiple factors are often considered by the architect or building designer when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that further complicate the decision-making process. To ease the material-selection process, this study examines the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of the study, it has identified the potential factors that will impact designers’ decisions in their choice of wall making alternative building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the analytic hierarchy process model, are discussed. The developed decision support system assist designers to assess their consequences in terms of whether or not a material option is likely to be best chosen over the existing conditions. The study also investigates the existing situations in the application of alternative wall making building materials. It assesses the current materials which are being used as a wall making alternative building materials, the extent of usage and barriers to use these materials. Keywords: decision making process; factors or variables; selection criteria; alternative building materials; selection framework; analytical hierarchy process (AHP)
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    A Study of Alternative Wall Making Materials Selection Using Ahp Method
    (Addis Ababa University, 2022-06-01) Behailu Workneh Tolu; Denamo Addissie (PhD)
    Material selection is a complex and delicate task determined by the vast number of building material options. Likewise, multiple factors are often considered by the architect or building designer when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that further complicate the decision-making process. To ease the material-selection process, this study examines the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of the study, it has identified the potential factors that will impact designers’ decisions in their choice of wall making alternative building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the analytic hierarchy process model, are discussed. The developed decision support system assist designers to assess their consequences in terms of whether or not a material option is likely to be best chosen over the existing conditions. The study also investigates the existing situations in the application of alternative wall making building materials. It assesses the current materials which are being used as a wall making alternative building materials, the extent of usage and barriers to use these materials. Keywords: decision making process; factors or variables; selection criteria; alternative building materials; selection framework; analytical hierarchy process (AHP)
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    A Study of Alternative Wall Making Materials Selection Using AHP Method
    (Addis Ababa University, 2022-06-01) Behailu Workneh Tolu; Denamo Addissie, (PhD)
    Material selection is a complex and delicate task determined by the vast number of building material options. Likewise, multiple factors are often considered by the architect or building designer when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that further complicate the decision-making process. To ease the material-selection process, this study examines the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of the study, it has identified the potential factors that will impact designers’ decisions in their choice of wall making alternative building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the analytic hierarchy process model, are discussed. The developed decision support system assist designers to assess their consequences in terms of whether or not a material option is likely to be best chosen over the existing conditions. The study also investigates the existing situations in the application of alternative wall making building materials. It assesses the current materials which are being used as a wall making alternative building materials, the extent of usage and barriers to use these materials. Keywords: decision making process; factors or variables; selection criteria; alternative building materials; selection framework; analytical hierarchy process (AHP)
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    A study on Improving Price Adjustment Administration in Federal Road Projects
    (Addis Ababa University, 2021-06-01) Simreteab Gebremedhin; Wubishet Jekale (PhD. Eng.)
    The degree of price variations referring to each specific type of construction shall be measured by specific price indices, in order to achieve more accurate results. In Ethiopian Road Authority, Price Index is commonly used for price adjustment administration in the escalation of road construction costs. This study aims to improve price adjustment administration in federal road projects. The objectives of the study report in this thesis are assessing current price indices determination practice when original source cease to publish indices, assessing reliable sources to minimize ceasing of publishing indices and developing guideline for price adjustment administration system when supplier cease to exist and replaced by new source. This research covered, the studies on improving price adjustment administration in federal road projects. Moreover, price adjustment administration when suppliers cease to published price indices were analyzed by trend, T-tests and regression analysis techniques, to obtain models to predict the future values of the new sources of indices, which was a way enabling the prediction of the future indices of a price adjustment in federal road projects. Using a detailed literature review, a quantitative data collection approach, data was collected from Ethiopian Road Authority payment certificates, to see the trend of price adjustments of key construction cost inputs (cement, bitumen, fuel and steel), National Bank of Ethiopia’s website (currency exchange ETB to USD) and different local and international road construction material suppliers’ websites. In this thesis, some descriptive statistical methods have been used for the analysis of Three DB case study projects that are completed under RSDP IV. The projects are Chole magna, Dire Dawa- Dewelle and Pawi-Junction. The result is analysed using trend, T-test and regression analysis methods. The analysis resulted that, NOC should be used as a new source for Chole magna and Dire Dawa-Dewelle projects. Producer Price Index (PPI); Petroleum from Bureau of Labour Statistics (BLS) U.S should be used for Pawi Junction-Fendkia-Ayma project. Finally, based on the analysis of the results, this research developed guideline to enable professionals to determine the new source of index using a common guideline and help to create common understanding.
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    A Study on Improving Project Delivery Method Selection Criteria Practice on Ethiopian Road Authority
    (Addis Ababa University, 2020-09-01) Edlawit Teka; Wubishet Jekale (PhD)
    Construction industry in Ethiopia is one of the fast growing industries with significant share in the GDP. It has an important contribution to the economy which involves various infrastructure developments. One of the major infrastructure elements is the road sector. Ethiopian Road authority has a long history in providing road infrastructure primarily in the country. A project delivery method (PDM) is a framework that determines the relationship and responsibilities of client, contractor and consultant. The decision to select delivery method should be based on a systematic approach that includes all available PDMs. The project under the Ethiopian Roads Authority ERA, continue to face great challenges when it comes to delivering projects by selecting the most appropriate DM for its projects. The general practice in this institution is largely depends on culture of the ERA board’ reliance on their familiarity and experience with a particular method. With this background, this study provides a comprehensive solution for this challenges of ERA. 27 criterions under four group of delivery method selection criteria are identified in this research effort. The criteria are identified through questionnaire survey from client, consultant and contractor perspectives. The result is analysed using Relative Importance Index(RII). Project actual challenges are thoroughly discussed based on 22 selected case study projects that are completed under RSDP IV and RSDP V. The analysis clarifies main challenges of ERA’s projects. The major challenges identified are: Right of way, variation orders, scope change, design change and adverse weather conditions. A sufficient set of critical issues are defined in this study and advantages/disadvantages of each delivery method is thoroughly studied with respect to the issues concentrating on the effects of PDM option on the project challenges. The study covers both the available PDMs (i.e. Design-Bid-Build (DBB), Design Build (DB). The model for selecting appropriate delivery method is developed using Multi-attribute decision tools to select a PDM in this research for case study projects. The model was verified using case study project. The model provides useful information and introduces the advantages and limitations of each PDM to the decision makers. an essential well-structured decision making process is embedded in the proposed framework of this study as a result of the analysis that is reliable and sufficient to solve the problem of selecting an appropriate PDM. Key word: - Delivery method selection criteria, project challenges, Multi Attribute Utility Theory
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    An Assessment on The Competitiveness of Indigenous Contractor’s In Road Construction Projects (The Case of Federal Roads)
    (Addis Ababa University, 2020-12-01) Zemenu Mersha Mihret; Wubshet Jekale (PhD)
    A competitive contractor is the guarantee of a project’s success with enough capacity and performance on the industry. Therefore, how to choose a competitive contractor is crucial for the clients in the sector. The Federal Democratic Republic of Ethiopia has given an emphasis on improving the quality and size of the road network and infrastructure. Concerning this, the Ethiopian Roads Authority (ERA) is one of the assigned institutions by the FDRE as an implementing agency to award and follow up the implementation of the federal road construction projects to be timely and cost-effective as well as to improve the road sector through competent indigenous contractors. However, different literatures and reports shows that the indigenous contractors are not competitive enough in ERA projects. Thus, the road sector of Ethiopia is being dependent on foreign contractors. Consequently, the country faced lack of foreign currency, lack of local job opportunities, lack of competitive local contractors, and the increment of construction cost & time and quality decrement. Therefore, the study assessed the extent of competitiveness and identified critical affecting factors. Finally, it indicates the improvement mechanisms of competitiveness for indigenous contractors which participate in ERA projects. To achieve this, the research used survey and case study research strategy with mixed approach analysis method. The source of data used for the analysis were collected from respondent documents through questionnaire survey and document review from G-1 contractor’s and ERA. Thus, 97 ICB during tender and 104 projects during actual implementation were used for analyzing the competitiveness extent of indigenous contractors. Therefore, the average competitiveness extent of indigenous contractors was 46.07% in terms of value of projects awarded whereas in terms of actual performance were 52.4%. To select the most critical indigenous contractor competitiveness affecting factors, 37 factors were identified. Among these, the identified and prioritized 12 factors are cash flow management, experience, annual turn over, shortage of finance, time planning & management, capacity of human resource, plant and equipment, price increment, crew productivity, project scope, inappropriate price offer and material availability. And also, to find competitiveness improvement mechanisms, 21 factors were identified. From these, the identified 9 improvement mechanisms are continuous capacity building, suitable government policy, efficient use of advance payment, adequate funding, utilizing foreign contractors’ best practice, competent project manager, well-defined work plan, utilizing latest technology and utilizing joint venture approach. The research further provides recommendations under what circumstances the competitiveness of indigenous contractor’s will be sustainably to Federal road construction projects. Keyword: Competitiveness, Indigenous Contractor’s, ERA, Road Construction
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    Assessing the Current Management Practice of Price Escalation and Its Effects on Cost Performance for Federal Public Building Projects
    (Addis Ababa University, 2025-06-01) Saron Gebeyaw Alemu; Solomon Sertse Desta
    In a country like Ethiopia, the construction sector is one of the major contributors tonational growth. Despite its importance in one country growth its performance, theindustry has faced many challenges during the last few years. One of the major reasons identified by different researchers is price escalation in the inputs of the construction projects. This study assesses the management practice of price escalation and its effect on the cost performance of federal public building projects. The research is descriptive and explanatory in nature and employed a mixed-method approach (both qualitative and Quantitative) with case study methodology. Four suitable cases from Universities located in Addis Ababa city were selected, and document review was used as a data collection instrument and utilized both primary and secondary data. For analyzing the collected data, the researcher used content and thematic analysis with within case analysis and cross-case analysis. In addition to these, the researcher uses four themes for analyzing the data: a description of the case, identifying the increment of major materials, labor, and equipment, assessing the effect of price escalation on each project's cost performance, and identifying the price adjustment techniques, source of price, and weightage for each project. The study investigates the impact of material price escalation on the cost performance of selected construction projects. Price increment were analyzed across various activities in both substructure and superstructure elements. In Project A, the maximum increment in the substructure was 49% for the 500 mm thick mat slab, while the superstructure’s 180 mm thick floor and roof beams experienced an escalation of 89%. For Project B, the substructure’s 200 mm thick suspended ground floor slab showed the highest increase at 85%, with a similar escalation of 88% seen in the superstructure’s 270 mm thick flat roof slab. Project C recorded an 84% increment in the foundation pad for the substructure, while the 180 mm thick roof slab led in the superstructure with an 87% increase. And also in Project D, the footing in the substructure had the greatest escalation at 91%, alongside the superstructure’s elevation column, which increased by 88%. And also, the results showed that there were different management practices used by contractors to overcome the challenges of price escalation. To enhance effectiveness, the study recommends early implementation of contractual adjustments and proactive cost management strategies in building projects. In the future, studies should focus on regularly developing construction resource price indices, analyzing the influence of finishing material cost fluctuations on project outcomes, and evaluating the contractor’s cost structure to better address non-adjustable contract elements. Key word: construction; Cost Performance; Price escalation
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    Assessing the significance of dedicated bike lanes for sustainable mobility in the Jemo-Mebrat Haile corridor in Addis Ababa
    (Addis Ababa University, 2025-06-01) Solomon Kushu; Tesfaye Hailu
    This study assesses the contribution of dedicated bike lanes to sustainable mobility within the Jemo-Mebrat Haile corridor in Addis Ababa, Ethiopia, necessitated by rapid urbanization and increasing traffic congestion. Utilized a mixed-methods approach, the research employed a purposive sampling method to survey 60 active cyclists using the corridor's bike lanes, with inclusion criteria focused on regular users. Key findings indicate that bike lanes significantly improve cycling accessibility, yet perceived safety remains a critical concern (2.8/5) due to inadequate enforcement and obstructions, acting as the strongest predictor of usage. The study also highlights gender disparities in safety perception and reveals that utilitarian motives like health/exercise (50%) and commuting (35%) are the primary drivers for bike lane use, rather than environmental concerns, alongside a critical need for infrastructure upgrades, policy enforcement, and network expansion. In conclusion, while the bike lanes are a foundational step towards sustainable mobility, their full potential is hindered by issues of safety, enforcement, and integration, leading to recommendations for strategic investments in physical barriers, enhanced policy enforcement, inclusive design, and integrated urban planning to maximize their effectiveness and sustainability in Addis Ababa and similar African urban contexts. Keywords: Urban cycling infrastructure, bike lane effectiveness, sustainable transportation, Addis Ababa, transport policy, active mobility
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    Assessment of Challenges of Construction Claims Handling Process: The Case of Federal Road projects
    (Adddis Ababa University, 2023-06-01) Jarso Gollisa Roba; Wubishet Jekale Mengesha (Phd)
    One of the issues a construction project might encounter is claim. Construction claim is essentially a demand made by one party to another. Claims will arise whenever a party alleges either an event has occurred or a right is denied or an obligation has not been performed that entitle a remedy to be requested. They may be classified by the related parties, rights claimed, legal basis, or characteristics of claims. Whatever the claim, the ultimate goal is to be qualified for an extension of time or/and additional payment. Studies show that public infrastructure projects have major claims and challenges. Accordingly, this paper analyses the current practice of claim handling process in federal road construction projects, challenges faced claim handling processes & the way it can be improved. The perception & experience of claim professionals involved in road construction projects was assessed via questionnaire & interview surveys and case studies were also used. Accordingly, the result showed that claim handling process in federal road projects has mainly four steps, which are identification, notification, substantiation and assessment and evaluation. There are also three main participants in a typical claim handling process involved in federal road projects; employer, contractor, and claims certifier/engineer/employer representative. Additionally, the result also revealed that many challenges faced during handling of claims. Inaccessibility of documents used to identify a claim, delay in notification claims timely were critical challenges of identification and notification process respectively. Incomplete records/report submission, unsatisfactory evidence to convince other party, poorly submission by contractor/lack of details and particulars were the top ranked challenges of substantiation and assessment process correspondingly. Developing good record keeping system, having good knowledge on terms and condition of contract document, take proactive claim management measure are ranked high by the respondents for improving the claim handling process. Furthermore, to support the survey result the research used some selected case studies and conduct in depth investigation and analysis. The finding expected to provide an important study results for client, contractor and consultant as well as professionals within the area of the study by easily identifying the core and sub-problematic areas. Key words: Construction claim, Claim handling, Federal Road Project, Contract document
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    Assessment of Challenges of Construction Claims Handling Process: The Case of Federal Road Projects
    (Addis Ababa University, 2023-06-01) Kasahun Worku Lema; Wubishet Jekale Mengesha (Phd)
    One of the issues a construction project might encounter is claim. Construction claim is essentially a demand made by one party to another. Claims will arise whenever a party alleges either an event has occurred or a right is denied or an obligation has not been performed that entitle a remedy to be requested. They may be classified by the related parties, rights claimed, legal basis, or characteristics of claims. Whatever the claim, the ultimate goal is to be qualified for an extension of time or/and additional payment. Studies show that public infrastructure projects have major claims and challenges. Accordingly, this paper analyses the current practice of claim handling process in federal road construction projects, challenges faced claim handling processes & the way it can be improved. The perception & experience of claim professionals involved in road construction projects was assessed via questionnaire & interview surveys and case studies were also used. Accordingly, the result showed that claim handling process in federal road projects has mainly four steps, which are identification, notification, substantiation and assessment and evaluation. There are also three main participants in a typical claim handling process involved in federal road projects; employer, contractor, and claims certifier/engineer/employer representative. Additionally, the result also revealed that many challenges faced during handling of claims. Inaccessibility of documents used to identify a claim, delay in notification claims timely were critical challenges of identification and notification process respectively. Incomplete records/report submission, unsatisfactory evidence to convince other party, poorly submission by contractor/lack of details and particulars were the top ranked challenges of substantiation and assessment process correspondingly. Developing good record keeping system, having good knowledge on terms and condition of contract document, take proactive claim management measure are ranked high by the respondents for improving the claim handling process. Furthermore, to support the survey result the research used some selected case studies and conduct in depth investigation and analysis. The finding expected to provide an important study results for client, contractor and consultant as well as professionals within the area of the study by easily identifying the core and sub-problematic areas. Key words: Construction claim, Claim handling, Federal Road Project, Contract document
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    Assessment of Construction Equipment Replacement Decisions (A Case Study: Addis Ababa City Road Authority)
    (Addis Ababa University, 2025-06-01) Gebeyehu Teka Mitiku; Solmon Sertse (PhD)
    Assets typically deteriorate with age, which raises operating and maintenance (O&M) expenses and lowers salvage values. Additionally, there may be more recent assets available for replacement that are more effective and better performance.Public and commercial organizations that own fleets and/or specialized equipment must therefore make decisions about when to replace them on a regular basis. Unfortunately, prior studies have highlighted the issue of agencies failing to replace their equipment on time. This problem is made worse in public contracts since, due to their service-oriented nature, there is no way to determine whether the equipment is profitable (economical).Therefore, the main purpose of this study is to investigate equipment replacement policies, procedures, and techniques of Addis Ababa City Road Authority. It also examines the obstacles of on time replacing of outdated equipment.To achieve this the study applied mainly the following information gathering tools i.e.; questionnaire, road construction equipment fleet record inventory (RCEFRI), document review and indepth interview.Accordingly The results indicated that the work objectives, safety, and management goals were found to be the most influential qualitative factors affecting the decision of equipment replacement, while Maintenance cost, downtime cost, and capital/purchasing cost are among the top quantitative factors that are considered while making a decision to replace equipment.Researcher conducted replacement analysis using minimum cost method. Sample of nine (9), thirteen (13), and eleven (11) to heavy machinery, machinery and light weight machine and vehicles respectively were taken from population of Road equipment The result indicated that 21, 63% equipment are beyond their economic life .the previous replacement history of AACRA indicated that increasing maintenance and repair cost is the leading factor of replacement. on the other hand among 784 AACRA equipment 56% are 15 years and above.In this sense it is necessary for the authority to take action to utilize approaches to optimize equipment replacement decision. The research also suggest that AACRA must evaluate equipment’s cost(Maintenance ,downtime cost…), performance (workout put….) and risk (accident,CO2 Emission…) factors and must replace equipment’s based on economical replacement analysis . Key word: Equipment replacement decision, replacement factors, economic life,replacement analysis and on time replacement.
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    Assessment of Construction Material Management Practice in Federal Housing Corporation Projects
    (Addis Ababa University, 2025-04-01) Huda Ahmed; Tadesse Ayalew (PHD)
    Material management practice involves planning, procuring, transporting, logistics, inspection, receiving, storage, and controlling material usage in construction projects. Ineffective management, poor procurement, delayed delivery, inadequate storage, and poor control systems can negatively impact project budget and completion time. The study evaluates construction material management practices at Federal Housing Corporation projects, focusing on planning, procurement, transport, logistics, handling, storage, inspection, wastage control, challenges, stakeholder involvement, and identifying best practices, aiming to provide direction for future projects. This study involved questionnaires and document reviews to gather data from contractors, clients, site counter engineers, and FHC-hired consultants involved in FHC projects. The study reveals current practices in material handling, inventory control, and material tracking, but also highlights challenges such as market fluctuations, incomplete design, local trafficking, and wastage. Stakeholders like owners, contractors, and consultants are involved in material delivery, quality planning, and schedules. Consultants focus on continuous inspections and follow-ups for material and work progress. Finally, the study suggests that effective material management techniques improve overall handling, site delivery, and prevent unexpected price variations from impacting project budget and completion time. Keyword: Material, material management practice, construction project, FHC projects
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    Assessment of Price Adjustment Practice on Public Building Projects in Addis Ababa, The Case of Selected Projects.
    (Addis Ababa University, 2025-04-01) Hamdu Nesru; Tadesse Ayalew (phd)
    The construction sector contributes significantly to a nation's GDP, which is crucial for economic growth and development in terms of the development of physical infrastructure. Ethiopia allocates a huge amount of budget for the development of public projects. Even though most public projects in Ethiopia face challenges to complete successfully within in planned budget and specified time frame. Ethiopia's building industry has faced difficulties due to market price fluctuations and inadequacies of the necessary construction inputs. The study looks into how Addis Ababa's public building projects are affected by price escalation in terms of project performance in terms of project cost and time overrun. The study employed a case study methodology to investigate how escalation affects public construction projects. Systematic sampling techniques were applied for the selection of a few best fit cases and focused on detailed contextual analysis. To measure the impact of price escalation on public building projects, construction material prices were investigated for a different period, and contract documents were reviewed and analyzed to explore the current price adjustment practice to overcome the risk of escalation by crosschecking the provision of different conditions of contract forms. The research shows that the price adjustment practices observed in the selected cases were different on the subject of selected construction inputs for the price adjustment, non-adjustable portion, permissible weighting/ coefficient, and the source of price/index. The number of representative elements for the price adjustment component, fixing non-adjustable factor, and establishment of permissible weight/coefficient was not consistent in the selected cases in this study. On the other hand, Addis Ababa Construction Bureau implements price adjustment evaluation for projects having a duration of less than 18 months in setting a new unit rate in assessing the direct cost of each work item. v Hamdu Nesru , MSc In Construction Management 2025 Assessment of Price Adjustment Practice on Public Building projects; The Case of Selected Projects In conclusion, escalation is a major challenge facing the construction sector in Ethiopia. The high escalation rate on the price of construction materials, labor and other inputs made it difficult to complete public building projects on schedule within budget. Key Words: Construction Projects, Price Escalation, Price Adjustment
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    Assessment of Price Adjustment Practice on Public Building projects; The Case of Selected Projects in Addis Ababa
    (Addis Ababa University, 2025-04-01) Hamdu Nesru; Tadesse Ayalew (PhD)
    The construction sector contributes significantly to a nation's GDP, which is crucial for economic growth and development in terms of the development of physical infrastructure. Ethiopia allocates a huge amount of budget for the development of public projects. Even though most public projects in Ethiopia face challenges to complete successfully within in planned budget and specified time frame. Ethiopia's building industry has faced difficulties due to market price fluctuations and inadequacies of the necessary construction inputs. The study looks into how Addis Ababa's public building projects are affected by price escalation in terms of project performance in terms of project cost and time overrun. The study employed a case study methodology to investigate how escalation affects public construction projects. Systematic sampling techniques were applied for the selection of a few best fit cases and focused on detailed contextual analysis. To measure the impact of price escalation on public building projects, construction material prices were investigated for a different period, and contract documents were reviewed and analyzed to explore the current price adjustment practice to overcome the risk of escalation by crosschecking the provision of different conditions of contract forms. The research shows that the price adjustment practices observed in the selected cases were different on the subject of selected construction inputs for the price adjustment, non-adjustable portion, permissible weighting/ coefficient, and the source of price/index. The number of representative elements for the price adjustment component, fixing non-adjustable factor, and establishment of permissible weight/coefficient was not consistent in the selected cases in this study. On the other hand, Addis Ababa Construction Bureau implements price adjustment evaluation for projects having a duration of less than 18 months in setting a new unit rate in assessing the direct cost of each work item. Assessment of Price Adjustment Practice on Public Building projects; The Case of Selected Projects Hamdu Nesru , MSc In Construction Management 2025 vi In conclusion, escalation is a major challenge facing the construction sector in Ethiopia. The high escalation rate on the price of construction materials, labor and other inputs made it difficult to complete public building projects on schedule within budget. Key Words: Construction Projects, Price Escalation, Price Adjustment
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    Assessment of Quality Management Practices of Selected Façade Materials
    (Addis Ababa University, 2025-06-01) Hawi Bogale; Tadesse Ayalew (PhD)
    This research investigates the quality management practices of wall exterior finishing materials in public construction projects in Addis Ababa. The study aims to identify commonly used finishing materials, assess the quality planning, control, and assurance the current practices applied, examine the key factors affecting their performance, and propose a guideline for improvement. To achieve these objectives, a mixed-methods approach was employed, combining qualitative and quantitative data through questionnaires, interviews, site observations, and document reviews. Triangulation was applied to ensure the reliability of findings across projects handled by the Addis Ababa Design and Construction Works Bureau, Addis Ababa Housing Development Corporation, and the Ministry of Health. The spatial scope of the study is limited to public building projects located within Addis Ababa, while the thematic scope centers on quality management practices related to wall exterior finishing materials specifically focusing on quality planning, quality control, and quality assurance. The study covers mid-rise (5-12) story public buildings constructed over the past fifteen years. Key findings reveal that durability, availability, and cost-efficiency dominate material selection, while sustainability, safety, and compatibility with other systems are often overlooked. Gaps were identified in documentation practices, material integration, and design specification clarity. Inadequate quality assurance systems and incomplete design documents prior to material procurement were common across projects. These issues have contributed to delays, increased costs, and reduced durability of exterior finishes. The study mentions strengthening design documentation, enforcing material compatibility assessments during the planning stage, and institutionalizing design review mechanisms before material procurement. These measures are vital for enhancing quality management practices and ensuring more sustainable and resilient public infrastructure in Addis Ababa. Key words: Exterior finishing materials, Quality management, public building projects, Quality planning, Quality control, Quality assurance, façade defects
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    Assessment of the Effectiveness of Bus Priority Systems and Their Challenges: The Case of Mexico to German Roundabout, Addis Ababa
    (Addis Ababa University, 2025-06-01) Nyamouch Simon; Berhanu Woldetensae (Associate Professor)
    Bus priority system are increasingly recognized as a key component of sustainable urban transportation, offering solutions to congestion and improving public transport efficiency. They are one solution that can help address the challenges faced by the bus transport system in Addis Ababa. This system improves public transport on the road network by providing buses with dedicated lanes, signal priority, and other elements that reduce travel times and improve reliability by looking at the challenges that affect urban mobility. A mixed-methods approach was employed, combining quantitative traffic data with qualitative input from stakeholders. the study aims how well bus rapid transit (BRT) corridors, dedicated bus lanes, and signal prioritization may improve bus service dependability and cut down on trip times. although concerns such as poor lane markings, enforcement gaps, and lack of public awareness persist. The study finds that well-designed bus priority schemes can reduce bus travel time by 66% and improve service reliability by 68%. Targeted recommendations emphasize improve enforcement, periodic infrastructure maintenance, enhanced public awareness, and integrated institutional collaboration. Key words: Bus priority system, road infrastructure, Sustainable Urban Transport, Challenges
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    Assessment of The Effectiveness of Bus Priority Systems and Their Challenges: The Case of Mexico To German Roundabout, Addis Ababa.
    (Addis Ababa University, 2025-06-01) Nyamouch Simon; Berhanu Woldetensae (Associate Professor)
    Bus priority system are increasingly recognized as a key component of sustainable urban transportation, offering solutions to congestion and improving public transport efficiency. They are one solution that can help address the challenges faced by the bus transport system in Addis Ababa. This system improves public transport on the road network by providing buses with dedicated lanes, signal priority, and other elements that reduce travel times and improve reliability by looking at the challenges that affect urban mobility. A mixed-methods approach was employed, combining quantitative traffic data with qualitative input from stakeholders. the study aims how well bus rapid transit (BRT) corridors, dedicated bus lanes, and signal prioritization may improve bus service dependability and cut down on trip times. although concerns such as poor lane markings, enforcement gaps, and lack of public awareness persist. The study finds that well designed bus priority schemes can reduce bus travel time by 66% and improve service reliability by 68%. Targeted recommendations emphasize improve enforcement, periodic infrastructure maintenance, enhanced public awareness, and integrated institutional collaboration. Key words: Bus priority system, road infrastructure, Sustainable Urban Transport, Challenges
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    Assessment of the Effectiveness of Bus Priority Systems and Their Challenges: The Case of Mexico To German Roundabout, Addis Ababa.
    (Addis Ababa university, 2025-06-01) Nyamouch Simon; Advisor: Berhanu Woldetensae (Associate Professor)
    Bus priority system are increasingly recognized as a key component of sustainable urban transportation, offering solutions to congestion and improving public transport efficiency. They are one solution that can help address the challenges faced by the bus transport system in Addis Ababa. This system improves public transport on the road network by providing buses with dedicated lanes, signal priority, and other elements that reduce travel times and improve reliability by looking at the challenges that affect urban mobility. A mixed-methods approach was employed, combining quantitative traffic data with qualitative input from stakeholders. the study aims how well bus rapid transit (BRT) corridors, dedicated bus lanes, and signal prioritization may improve bus service dependability and cut down on trip times. although concerns such as poor lane markings, enforcement gaps, and lack of public awareness persist. The study finds that well designed bus priority schemes can reduce bus travel time by 66% and improve service reliability by 68%. Targeted recommendations emphasize improve enforcement, periodic infrastructure maintenance, enhanced public awareness, and integrated institutional collaboration. Key words: Bus priority system, road infrastructure, Sustainable Urban Transport, Challenges
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    Assessment on Practice of Real Property Valuation for Collateral in Addis Ababa: in the Case of Two Selected Private Commercial Banks
    (Addis Ababa University, 2023-08-01) Agernew Aseres Alene; Teshome Tefera (PhD)
    The main aim of the study is to assess the existing practice of real property valuation for collateral in the case of commercial banks in Addis Ababa; and investigate if the practice is consistent among the banks and to check if the practices are compatible to the internationally accepted principles. In order to accomplish this objective, the real property valuation practice for collateral in banks was considered as a real-life context as existing phenomenon; thus, appropriate case study method is deployed to investigate the aforementioned valuation related matters in the selected banks in Addis Ababa. The case study method allowed the researcher to use a variety of data using multiple data collection mechanisms that facilitated the validation of data through triangulation. It also helped the researcher avoid bias and error of data. The study assessed the local and international guidelines related to real property valuation, manuals of selected banks and Ethiopian bankers association. And, it finally benchmarking practice of real property valuation on Ethiopian banks’ guidelines is done based on the findings. The study revealed that each bank has its own valuation manual and procedures to do valuation. The amount of loan given to borrowers is not based on the market value of the property. In addition, the value of a property estimated by the banks doesn’t predict the actual market price but on securing the bank from risk as much as possible to ensure the banks can get their money back in case of default. Thus, properties are compulsorily undervalued by the lending banks and restricts the borrowing potential of investors and firms. Almost all commercial banks employ cost method due to availability of relevant comparative cost data, the difficulty in updating rental rates of buildings, and lack of stability in the Ethiopian property market. The depreciated replacement cost method of building valuation and determination of land value of land use right are not also compatible to the generally accepted standards due absence of income and expense data of subject and comparable property. The study recommended the need to minimize variation of value; revisit the existing land property law; align the standards to the generally accepted practice; develop standardized valuation framework in banks, and it is also strongly recommended that valuators need to demonstrate appropriate academic/professional qualifications, and technical competence to improve the practice.. Key words: real property, collateral, basis of valuation, valuation methods, location value
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    Causes and Mitigation Strategies for Construction Delays in Small- And Medium-Scale Dams: The Case of Phase 1 of the Finna Oromia Initiative
    (Addis Ababa University, 2025-05-01) Gelana Kisi Baso; Solomon Sertse Desta (PhD)
    The Finna Oromia Initiative is an ambitious regional development program launched by the Oromia National Regional Government to enhance water storage capacity through the construction of small- and medium-scale multipurpose dams in four phases. However, projects in Phase 1 of the Initiative have experienced significant delays, undermining their intended benefits. This study investigates the causes of these delays. Employing a sequential explanatory mixed-methods research design, the research collected quantitative data using structured surveys from key project stakeholders across 24 dam projects and an in-depth qualitative case study of the Finna Oromia Keta Dibe Dam. The findings of the survey revealed that unrealistic initial time and cost estimations, the contractor’s inadequate experience and limited capacity, and price escalations/lack of timely adjustments are the most critical factors causing delays in the studied projects. Other significant contributors are: design modifications, contractor’s lack of commitment, political instability/security issues, shortage and late mobilization of resources, unfavorable weather conditions, and delays in land acquisition/Right-of-Way issues. The qualitative case study of the Finna Keta Dibe Dam further underscored how foundation-related design modifications and unforeseen site conditions led to extended time overruns. The study concludes that construction delays in Phase 1 projects of the Finna Oromia Initiative are multifactorial, resulting from the interaction of technical, financial, managerial, logistical, and external factors. Based on the findings, the study developed practical and stakeholder-specific recommendations on mitigation strategies for the identified causes of delay. Key Words: Construction delays, Finna Oromia Initiative, causes of delay, delay factors, sequential explanatory mixed-methods research design, mitigation strategies, Ethiopia